الخميس، 29 نوفمبر 2012

Gemstones in Jewellery: Understanding Amber


It is formed from the fossilised tree resin of now extinct conifer and ancient pine trees and must be several million years old to be called amber. Amber is a treasured gemstone that has been used in jewellery and decoration since the Stone Age and is perhaps the oldest substance ever used for human adornment.
Amber has been sort after by collectors for many years; steadily growing in popularity it is now readily available on the high street and is a very popular choice for jewellery designers. As amber is created from fossilised tree resin no one piece is ever the same; each one is unique and this is one of the most appealing characteristics. It can be produced in a variety of sizes and shapes and is available in a range of colours with the most popular being the fiery bronze cognac amber. The green colour is growing in popularity and is created when moss and plant material are captured inside it creating a variegated mottled effect, other colours include yellow, white and even black.
Although amber can be facetted and given edges, it is more widely seen as a cabochon creating a soft smooth finish which allows the natural inclusions of plant life and insects captured inside to be seen easily. These inclusions are highly desirable and have been a source of fascination for years. We all remember the scene from Jurassic Park with the fly in the amber on the professors stick, it is a memorable image.
As amber is relatively inexpensive and light weight is it often used as large stones set into eye catching pendants and necklets. Most commonly mounted into silver jewellery the soft warm colour also lends itself to gold settings.
The MOH scale measures the gemstones relative hardness on a scale of 1 to 10 based on the stones scratchability. Diamond is the hardest at 10 followed by sapphire and rubies at 9. Amber measures 2.5 so it is not as hard as some gemstones.
As with all gemstones it is important to properly care and clean the stone to ensure it retains its appeal. It is best that amber does not come in to contact with solutions such as hair spray and perfumes. I would also advise that all jewellery is removed when using household soaps, detergents, cooking oils and butters. All of these can leave amber with a dull white coating that become permanent.
Avoid exposing any items to sudden changes in temperature and remove it when doing physical activities. Amber jewellery should be used with a soft cloth where it cannot rub against metal or other jewellery which may cause the stone to chip. Some jewellery stores offer ultrasonic or steam cleaners to thoroughly clean items of jewellery; these should not be used to clean amber jewellery. I would suggest using lukewarm water and a soft cloth to restore it to its natural lustre.
Now that you know the properties and characteristics of amber as well as how to look after and clean the stones, I thought I would introduce you to a bit of legend and lore surrounding the stone. It has been said that amber's variation in colour reflects the four seasons and the wearer's mood. Many healing and magical powers have been associated with it; the ancient Greeks believed that it could be worn as protection against disease. It has also been used to treat asthma, rheumatism and internal problems throughout the ages. It is believed that amber brings good luck and has long been associated with healing energy and mental stimulation; it is also said to balance aggressive traits.
So now you have all the information you need to enjoy your amber jewellery; I hope that this article goes some way to help you understand the characteristics and best way to care for this striking and sought after stone.
After working in the jewellery industry for a number of years it became apparent that the characteristics of each gemstone are not always fully understood. Here at Chapelle Jewellery we try to explain every aspect of the jewellery so our customers leave knowing how to care for the item and understanding any limitations it may have. Please contact us for more information about any of the gemstones you see on our website.


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What Makes Certain Metals Hypo-Allergenic?


We have been hearing the phrase hypo-allergenic a lot recently. It has become increasingly common for those who have recently become engaged to ask if the wedding band that they are planning on purchasing is hypo-allergenic, or not. Something is deemed to be hypo-allergenic when it causes, or claims to cause in some cases, fewer allergic reactions than similar products on the market.
An allergic reaction occurs when an individual has an allergy, or a hypersensitivity to a certain substance. These reactions are often predictable and occur rapidly. Most often when an individual has an allergic reaction to a band they have been wearing it takes the form of an itchy red rash appearing around the ring. These cases can range from mild to severe but in any case this is definitely not a symptom you want to have whenever you put your wedding band on.
The cause of the majority of these allergic reactions nickel. Nickle, which is used as a binder in many metals today, effects nearly 25% of women and 15% of men. With this in mind if you have an allergy to nickel or you think you may have an allergy to nickel you definitely want to choose a wedding band than contains no trace of nickel. Since this problem has become increasingly common most jewelers will label their rings hypo-allergenic, which in the realm of jewelery and wedding bands has been transformed to mean nickel-free. If you cannot find hypo-allergenic labels you should always be able to ask your jeweler and he/she should be able to answer promptly. Always buy from a reputable jewelers as many less than honest jewelers will use nickel binders as it is less expensive and falsely label it hypo-allergenic.
So which type of metals are hypo-allergenic? In general if you are looking for a wedding bands and have a sensitivity to nickel you are pretty much always safe if you go with precious metals. These would include gold, white-gold, and platinum. Any rings or wedding bands you buy made from these metals are typically not going to use nickel as a binder as should be safe to wear. However, if you are looking for alternative metals for your wedding bands such as titanium or tungsten you will have to do more research before you commit to your purchase.
Metals like tungsten are cheaper metals and as such it is more common to find nickel to be used as a binder in the metal. Although other binding metals can be used, such as cobalt, it is not uniformly so, so you will want to check with your jeweler before you purchase a tungsten ring.
One of the newer alternative metals is cobalt chrome. Cobalt Wedding Bands do not use any nickel as binder and it is always a hypo-allergenic metal. Cobalt chrome resembles the color of white-gold and does not easily scratch, so if you are in the market for a white-gold wedding band without the price tag this would be an excellent choice.
Cobalt wedding bands are always hypo-allergenic and never contain nickle.
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Article Source: http://EzineArticles.com/7388060


Article Source: http://EzineArticles.com/7388060